I ka hana ʻana o Ductile Iron (ʻike pū ʻia ʻo Ductile Iron), he mea koʻikoʻi ka hoʻohana ʻana i nā carburizer kiʻekiʻe e hoʻokō i nā waiwai i makemake ʻia o ka huahana hope.ʻO kahi recarburizer maʻamaugraphite petroleum coke (GPC), i hana ʻia mai ka petroleum coke ma o ke kaʻina hana wela wela.

Ke koho ʻana i kahi recarburizer no ka hana hao ductile, pono e noʻonoʻo ʻia kekahi mau mea.ʻO ka mea koʻikoʻi o kēia mau mea, ʻo ia ka maʻiʻo kalapona paʻa, ka sulfur content, ka lehu, ka maʻi volatile, ka mea nitrogen a me ka maʻi hydrogen.

ʻO ka maʻiʻo kalapona paʻa ka pākēneka o ke kalapona i koe i loko o ka graphite petroleum coke ma hope o ka puhi ʻia ʻana o nā volatiles a me ka lehu.ʻO ke kiʻekiʻe o ka maʻiʻo kalapona paʻa, ʻoi aku ka maikaʻi o ka recarburizer i ka hoʻonui ʻana i ka maʻi kalapona i loko o ka hao hoʻoheheʻe.graphite petroleum coke me ka maʻiʻo kalapona paʻa o ka liʻiliʻi loa 98% ua paipai ʻia no ka hana ʻana i ka hao ductile.

He mea haumia maʻamau ka Sulfur i loko o ka coke petroleum graphite a hiki i kona hele ʻana ke hoʻopilikia i nā waiwai hope o ka hao ductile.No laila, he mea nui e koho i ka graphite petroleum coke me ka haʻahaʻa sulfur maʻiʻo (maʻamau ma lalo o 1%).

ʻO ka maʻiʻo lehu ka nui o nā mea hiki ʻole ke puhi ʻia i loko o ka coke petroleum graphite.Hoʻokumu ka mea lehu kiʻekiʻe i ka slag i loko o ka umu, e hoʻonui ai i nā kumukūʻai a hoʻemi i ka pono.ʻO kēia ke kumu e ʻōlelo ʻia ai e hoʻohana i ka coke petroleum graphite me kahi ʻona lehu ma lalo o 0.5%.

Loaʻa nā mea hoʻoheheʻe i nā kinoea a i ʻole nā ​​​​wai e hoʻokuʻu ʻia ke hoʻomehana ʻia ka graphite petroleum coke.Hōʻike ka maʻiʻo mea hoʻoheheʻe kiʻekiʻe e hiki i ka graphite petroleum coke ke hoʻokuʻu i nā kinoea hou aʻe, hiki ke hana i ka porosity i ka huahana hope.No laila, pono e hoʻohana ʻia ka graphite petroleum coke me ka mea maʻamau ma lalo o 1.5%.

ʻO ka maʻiʻo Nitrogen kahi haumia ʻē aʻe i loko o ka coke petroleum graphite e pono e mālama ʻia i lalo no ka mea hiki ke hoʻopilikia i nā waiwai mechanical o ka hao nodular.ʻO ka graphite petroleum coke me ka liʻiliʻi o ka 1.5% nitrogen content he mea kūpono ia no ka hana hao nodular.

ʻO ka mea hope loa, ʻo ka maʻi hydrogen kekahi mea e pono e noʻonoʻo ʻia ke koho ʻana i kahi hoʻoulu kalapona no ka hana hao nodular.Hiki i nā pae hydrogen kiʻekiʻe ke alakaʻi i ka brittleness a me ka emi ʻana o ka ductility.ʻO ka graphite petroleum coke me ka hydrogen ma lalo o 0.5% ka makemake.

I ka hōʻuluʻulu manaʻo, pono ka hana hao nodular i kahi mea hoʻoulu kalapona kiʻekiʻe e kūpono i nā koi kikoʻī no ka maʻi kalapona paʻa, ka sulfur maʻiʻo, ka lehu lehu, ka mea hoʻoheheʻe, ka maʻi nitrogen, a me ka maʻi hydrogen.ʻO ka hoʻohana ʻana i ka coke petroleum graphite e hoʻokō i kēia mau koi e hōʻoia i ka hana ʻana i ka hao nodular kiʻekiʻe, ʻike ʻia ʻo Ductil Iron a i ʻole SG hao.